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arrhythmia - Coggle Diagram

- - - - Beta blockers
      - Non-dihydropyridine calcium channel blockers
      - Antiarrhythmic medications
      - Acetylcholinesterase inhibitors
- - - - calcium channel blockers: increase refractoriness and
        
        slow the conduction
  - - - beta blockers
  - - - prolong repolarization by blocking potassium channels
  - - - Lidocaine (lignocaine) and mexiletine
    - - Flecanide and propafenone
    - - Quinidine, procainamide, and disopyramide
        
        block the Na channel
- - - - if SA node fails
    - - other parts of atria
        
        plan B
      - AV node
        
        plan C
      - bundle of His and purkinje fibers
        
        plan D
- - - - partial repolarization
        
        close sodium channels and opens of potassium channels
        
        potassium efflux
    - - plateau
        
        slow voltage gated calcium channels open
        
        voltage gated potassium channels close
        
        reduce potassium efflux
        
        ungated potassium channels still open
        
        inward calcium current is balanced by outward potassium current
        
        calcium influx lead to contraction and release calcium from the SR
    - - depolarization
        
        fast voltage-gated sodium channels open
        
        sodium influx
    - - repolarization
        
        calcium channels close
        
        stop calcium influx
        
        voltage gated potassium channels open
        
        potassium efflux
    - - resting membrane potential
        
        stable resting membrane potential due to high potassium permeability
- - - - regulates the function of the electrical conduction system of the heart